Hill ec3000 filling scba tanks

[madeintheuk]

So you guys know a lot more than me about this, so just bouncing the idea off you guys. 


the yong hang is quite the compressor, and will happily fill big bottles right? But in order to do it, the consensus seems that you run it for 15-20 mins, cool it for the same, then rinse/repeat. 


so with this being the process, why can’t you do the same with the hill? Yes it’s more money, and more sophisticated. Shuts itself off if too hot, etc….but if I were to do the same process as the yong heng, why couldn’t I fill large bottles in theory? 

 

[shoot44]

I really like my Hill EC3000, convenient, quiet, etc, but to fill a large tank - don't think so. Too much money and not what it was designed for.

The YH used water for cooling and lets face it water cools better than air. I bet the folks at Hill engineered their compressor taking this in to consideration, but they did not engineer it to fill large bottles.

Don't own a YH, never even seen one but it is advertised, and presumably engineered to fill these bottles.

My Hill always stays under 55c when filling/refilling my gun's .48L carbon fiber bottle. If you fill a large tank it will go to 75c, cool down to 60c and repeat the process until full. In other words it will be running in the high temp range almost all the time.

I would not do it!

 

[Humdinger]

The Hill was designed to be a direct to rifle compressor and only small tanks up to 3 liter capacity. The Hill has a maximum pressure limit of 300 bar or 4350 psi. It is air cooled and not designed for prolonged runs.

Every tool is designed for certain tasks. Someone can use a compact car with a trailer hitch to pull a 10,000 lb. trailer and it might work a few times before the transmission fails or the motor blows a head gasket. Someone else can hunt deer with a .22 and occasionally bag one. Does that mean it's prudent to do so?

Asking a Hill to fill large tanks it isn't designed for will greatly shorten its life span. 

So in theory, it can almost fill a large tank. But it's not designed for filling big tanks so why wear it out doing what it's not designed to do?

 

[shoot44]

double post.

 

[madeintheuk]

Don’t get me wrong, I wouldn’t buy this compressor just with the intention of ignoring the manufacturer specifically and filling larger bottles. I’m just trying to understand what makes it so different from the yong hang, that would make it an absolute no no. 
again, the yong hang needs to cool just like the hill does. I know the yong is water cooled, but the hill has much bigger fans. In theory, it should be able to fill them (given not to the full 4500psi), and do it just as efficiently as a young hung. 

 

[theLBC]

yeah, i think it is about max run time, and adequate cooling off time. i don't see how that is any different than filling a rifle many times at lower pressures...

BUT!!! it takes a long time to top off a big tank at high pressures compared to a rifle, so i wouldn't do it unless you only ran it for as long as you need for a rifle to get from 250 to 300 bar.

 

[madeintheuk]

yeah, i think it is about max run time, and adequate cooling off time. i don't see how that is any different than filling a rifle many times at lower pressures...

BUT!!! it takes a long time to top off a big tank at high pressures compared to a rifle, so i wouldn't do it unless you only ran it for as long as you need for a rifle to get from 250 to 300 bar.

Agreed. Definitely wouldn’t go past the manufacturer recommendations. This post was really more for my personal information than wanting to buy it and try it. Just trying to wrap my head around why some manufacturers are ok with things, and others aren’t. I guess it can boil down to risk/reward analysts really. How many warranty claims can they afford before not being able to turn a profit. 

 

[biohazardman]

The Hill runs a single o-ring for the ring on it's first stage piston in an aluminum cylinder and a couple of o-rings on the second. 

The Yong Heng has three steel alloy rings in a cast iron cylinder for the first stage, like your car engine, and three composite rings for the second stage. It is also, like yer car, water cooled. These differences are why the Yong Heng will do the extra werq without failure and improve the longevity of the compressor.

The Yong Heng also has an oil filled crankcase to keep the rod and crankshaft happy.

The Yong Heng can be run for longer if it is kept cool which is not difficult to do with Ice in the reservoir and a fan running over the whole unit.

You can see the o-rings for the first and second stage pistons on the Hill in this video at the 10:50 minute mark. It is clearly not designed for longevity.

https://duckduckgo.com/?q=hill+ec+3000+overhaul&t=ffab&atb=v180-1&iar=videos&iax=videos&ia=videos&pn=1&iai=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dj9ARFfEtv9s



The Yong Heng unit looks like this

 

[madeintheuk]

The Hill runs a single o-ring for the ring on it's first stage piston in an aluminum cylinder and a couple of o-rings on the second. 

The Yong Heng has three steel alloy rings in a cast iron cylinder for the first stage, like your car engine, and three composite rings for the second stage. It is also like yer car water cooled. These differences are why the Yong Heng will do the extra werq without failure and improve the longevity of the compressor.

The Yong Heng also has an oil filled crankcase to keep the rod and crankshaft happy.

The Yong Heng can be run for longer if it is kept cool which is not difficult to do with Ice in the reservoir and a fan running over the whole unit.

You can see the o-rings for the first and second stage pistons on the hill in this video at the 10:50 minute mark.

https://duckduckgo.com/?q=hill+ec+3000+overhaul&t=ffab&atb=v180-1&iar=videos&iax=videos&ia=videos&pn=1&iai=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dj9ARFfEtv9s



The Yong Heng unit looks like this

That’s the technical info I was looking for. Thank you. So a sub $400 compressor is built better than a $1300+ compressor. There are some things that just need to be bought from China!

 

[biohazardman]

Yes, sadly the Yong Heng is designed and built to take on much more than the Hill.

The Hill was really not designed to be run for long and just made to fill guns which it will do just fine and the o-rings can be replaced as many times as they need to be.

I really don't understand why people buy the Hills but they do. I expect if they did a bit of research before the purchase they would not purchase the Hill EC 3000.

The Yong Heng compressors have their own problems with poor Quality Control from China. So you roll the dice on whether you get a good one. Although chances weigh heavily on you getting a good one.